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Cisco 2621xm as terminal server

I am using a 2621xm as a terminal server.  I have a 32 port async card with 4 octal cables.  We are experiencing some issues.

1)  Sometimes the command prompt(MAC) closes and doesn't free up the line on the terminal server.  I have to go to the term server and clear line #.  If this happens the students try to reconnect (before I clear the line) and they are sent to the terminal server rather than the console line associated with the port number.

2)  How do I prevent users in the local username db from ssh'ing directly to the terminal server? and only allowing the admin user to ssh to the term server?

 

I have the following configuration on the terminal server...

Current configuration : 3357 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname AS_1
!
boot-start-marker
boot-end-marker
!
enable secret 5 {secret password}
!
no aaa new-model
!
resource policy
!
memory-size iomem 15
no network-clock-participate slot 1 
no network-clock-participate wic 0 
ip subnet-zero
no ip routing
no ip cef
!
!
no ip dhcp use vrf connected
!
!
ip domain name {domain.name}
ip ssh port 2001 rotary 1 32
ip ssh version 2
!
!
!
username cisco password 0 {pass}
username admin privilege 15 secret 5 {secret pass}
!
!
!
interface FastEthernet0/0
 ip address {public IP address} 255.255.254.0
!         
interface FastEthernet0/1
 shutdown
!
ip default-gateway {our gw address}
ip classless
!
ip http server
no ip http secure-server
!
!
!
control-plane
!
banner motd ^CC
************************************************
**                                            **
**        Authorized Access Only!             **
**                                            **
************************************************
^C
!
line con 0
 exec-timeout 15 0
 logging synchronous
 login local
line 33
 login local
 rotary 1
 no exec
 transport input ssh
line 34
 login local
 rotary 2
 no exec
 transport input ssh
line 35
 login local
 rotary 3
 no exec
 transport input ssh
line 36
 login local
 rotary 4
 no exec
 transport input ssh
line 37
 login local
 rotary 5
 no exec
 transport input ssh
line 38
 login local
 rotary 6
 no exec
 transport input ssh
line 39
 login local
 rotary 7
 no exec
 transport input ssh
line 40
 login local
 rotary 8
 no exec
 transport input ssh
line 41
 login local
 rotary 9
 no exec
 transport input ssh
line 42
 login local
 rotary 10
 no exec
 transport input ssh
line 43
 login local
 rotary 11
 no exec
 transport input ssh
line 44
 login local
 rotary 12
 no exec
 transport input ssh
line 45
 login local
 rotary 13
 no exec
 transport input ssh
line 46
 login local
 rotary 14
 no exec
 transport input ssh
line 47
 login local
 rotary 15
 no exec
 transport input ssh
line 48
 login local
 rotary 16
 no exec
 transport input ssh
line 49
 login local
 rotary 17
 no exec
 transport input ssh
line 50   
 login local
 rotary 18
 no exec
 transport input ssh
line 51
 login local
 rotary 19
 no exec
 transport input ssh
line 52
 login local
 rotary 20
 no exec
 transport input ssh
line 53
 login local
 rotary 21
 no exec
 transport input ssh
line 54
 login local
 rotary 22
 no exec  
 transport input ssh
line 55
 login local
 rotary 23
 no exec
 transport input ssh
line 56
 login local
 rotary 24
 no exec
 transport input ssh
line 57
 login local
 rotary 25
 no exec
 transport input ssh
line 58
 login local
 rotary 26
 no exec
 transport input ssh
line 59
 login local
 rotary 27
 no exec
 transport input ssh
line 60
 login local
 rotary 28
 no exec
 transport input ssh
line 61
 login local
 rotary 29
 no exec
 transport input ssh
line 62
 login local
 rotary 30
 no exec
 transport input ssh
line 63
 login local
 rotary 31
 no exec
 transport input ssh
line 64   
 login local
 rotary 32
 no exec
 transport input ssh
line aux 0
line vty 0 4
 login local
 transport input ssh
line vty 5 15
 login local
 transport input ssh
!
!
end

 

 

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